I save CD audiobooks onto my computer. They initially transfer as music files and I manually switch them to audiobook. That option is not available in Music. How can I change these into audiobooks? I tried syncing directly to the phone from my computer, but I have Cloud Music Library so it won't let me.
iMac Line (2012 and Later)
Hello janacjb,
Thank you for using the Apple Support Communities!
I see from your post that you want to know how you can convert mp3 files to audiobook files in macOS Catalina.
Please note that the files you want to convert must be downloaded to your computer. They cannot be available to download from the iCloud Music Library. If the file shows the 
icon, you must click on it in Music and download it first.
This is still possible by following these steps:
Once the file has been brought over you can then add it to your collections in the Books app.
I hope this information helps you!
Cheers.
Hello janacjb,
Thank you for using the Apple Support Communities!
I see from your post that you want to know how you can convert mp3 files to audiobook files in macOS Catalina.
Please note that the files you want to convert must be downloaded to your computer. They cannot be available to download from the iCloud Music Library. If the file shows the icon, you must click on it in Music and download it first.
This is still possible by following these steps:
Once the file has been brought over you can then add it to your collections in the Books app.
I hope this information helps you!
Cheers.
Import the tracks into Music. Change the names or sort names of the tracks into a standard <Book>, Part ## form where the part numbers are sequential. See Organizing audiobook chapters - Apple Community for background. The script would need a little tweak to replace "iTunes" with "Music" to work with the Music app. Once the metadata is correct you can import the tracks into Books and remove from Music.
tt2
What if I have multiple mp3 files that make up the book? It adds them as you described but the order is off. It will play file 3 first for example.
As I try not all the mp3 files display in music playlist. There are 47 mp3 files for the book and only 38 are appearing in the playlist .
See Missing Artist or Album not with others by same artist. The other 9 tracks might be misclassified in your library.
tt2
Converting mp3 to audiobook? Not a thing anymore?
